WASHINGTON (Reuters) - Meat-loving Americans will stick with beef despite a second U.S. case of mad cow disease, analysts and trade groups said on Sunday, even if cattle markets have the jitters.

Consumer groups said the new case showed the need to close holes in the U.S. defenses against the brain-destroying disease. The Center of Science in the Public Interest, for example, or CSPI, said a system was needed to track the origins of suspect cattle within 48 hours.